Location History:
- Kudamatsu, JP (1992 - 1993)
- Yamaguchi, JP (2003)
Company Filing History:
Years Active: 1992-2003
Title: Haruo Hirakawa: Innovator in Ventilation Technology
Introduction
Haruo Hirakawa is a notable inventor based in Kudamatsu, Japan. He has made significant contributions to the field of ventilation technology, holding three patents that showcase his innovative spirit and technical expertise.
Latest Patents
Hirakawa's latest patents include a method of manufacturing a ventilating device and the ventilating device itself. This device is designed to be easily assembled and disassembled, featuring a blower for exhaust and a blower for air supply mounted on an electric motor. The electric motor is strategically installed in the exhaust flow path of a silencer box, which is divided by partitions into exhaust and air supply flow paths. Sound-absorbing material is installed on the wall surfaces of these paths, enhancing the device's efficiency. Each blower aligns with the respective air flow paths, allowing for easy insertion of air blow devices from the upper side, while the blowers can be accessed from the side.
Another significant patent is for methods and apparatus for ventilating carriages. This invention includes a ventilation control device for high-speed train carriages that operates in conjunction with a ventilating blower. A deflectable spring flap is mounted across the ventilation duct, and when passenger discomfort is detected, the flap activates a limit switch. This action triggers a driving solenoid to close a shutter, effectively shutting off the airflow through the duct for a predetermined period, thus ensuring passenger comfort.
Career Highlights
Hirakawa is currently employed at Hitachi, Ltd., where he continues to develop innovative solutions in ventilation technology. His work has not only advanced the field but has also contributed to the comfort and safety of passengers in high-speed trains.
Collaborations
Throughout his career, Hirakawa has collaborated with talented individuals such as Hiroshi Higaki and Atsushi Ikio. These partnerships have fostered a creative environment that encourages the development of groundbreaking technologies.
Conclusion
Haruo Hirakawa's contributions to ventilation technology exemplify his dedication to innovation and improvement in engineering. His patents reflect a commitment to enhancing user experience and safety in various applications.